Rice husk-derived hard carbons as high-performance anode materials for sodium-ion batteries

Wang, Qiaoqiao; Zhu, Xiaoshu; Liu, Yuhan; Fang, Yuyan; Zhou, Xiaosi; Bao, Jianchun

doi:10.1016/j.carbon.2017.11.054

Cited by 351 publications

(199 citation statements)

References 67 publications

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“…This outperforms other carbon‐based anodes reported so far for SIBs in the literature (Figure d) . Table S1 in the Supporting Information compares the cycle life and stability of the N‐CNS electrode with other carbon‐based electrodes from the literature . One can see that the N‐CNS electrode shows the best cycling stability for SIBs compared to other carbon‐based ones.…”

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confidence: 71%

Sodium/Potassium‐Ion Batteries: Boosting the Rate Capability and Cycle Life by Combining Morphology, Defect and Structure Engineering

et al. 2020

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Carbon‐based materials have been considered as the most promising anode materials for both sodium‐ion batteries (SIBs) and potassium‐ion batteries (PIBs), owing to their good chemical stability, high electrical conductivity, and environmental benignity. However, due to the large sizes of sodium and potassium ions, it is a great challenge to realize a carbon anode with high reversible capacity, long cycle life, and high rate capability. Herein, by rational design, N‐doped 3D mesoporous carbon nanosheets (N‐CNS) are successfully synthesized, which can realize unprecedented electrochemical performance for both SIBs and PIBs. The N‐CNS possess an ultrathin nanosheet structure with hierarchical pores, ultrahigh level of pyridinic N/pyrrolic N, and an expanded interlayer distance. The beneficial features that can enhance the Na‐/K‐ion intercalation/deintercalation kinetic process, shorten the diffusion length for both ions and electrons, and accommodate the volume change are demonstrated. Hence, the N‐CNS‐based electrode delivers a high capacity of 239 mAh g−1 at 5 A g−1 after 10 000 cycles for SIBs and 321 mAh g−1 at 5 A g−1 after 5000 cycles for PIBs. First‐principles calculation shows that the ultrahigh doping level of pyridinic N/pyrrolic N contributes to the enhanced sodium and potassium storage performance by modulating the charge density distribution on the carbon surface.

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confidence: 71%

Sodium/Potassium‐Ion Batteries: Boosting the Rate Capability and Cycle Life by Combining Morphology, Defect and Structure Engineering

et al. 2020

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“…All the samples present a predominant C1s peak at 284.5 eV and O1s peak at 532 eV. The XPS spectrum of C1s (Figure S5, Supporting Information) and O1s (Figure S6, Supporting Information) confirm the oxygen functional groups containing CO and CO …”

Section: Resultsmentioning

confidence: 74%

“…Recently, various carbonaceous materials, including expanded graphite, carbon spheres, carbon nanofibers, hollow carbon nanowires, and biomass‐derived carbon, have been investigated as anode materials for LIBs and SIBs . Quite interestingly, carbon materials exhibiting disordered nature with a low degree of graphitization can deliver a relatively high capacity, and are known as amorphous carbon or hard carbon (HC).…”

Section: Introductionmentioning

confidence: 99%

Hierarchical Interconnected Expanded Graphitic Ribbons Embedded with Amorphous Carbon: An Advanced Carbon Nanostructure for Superior Lithium and Sodium Storage

Yang

Zhang

et al. 2018

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Carbon materials have attracted considerable attention as anodes for lithium-ion and sodium-ion batteries due to their low cost and environmental friendliness. This work reports an advanced carbon nanostructure that takes advantage of the chelation effect of glucose and metal ions, which ensures the uniform dispersion of metal in the precursor. Thus, an effective catalytic conversion from sp to sp carbon occurs, enabling simultaneously formation of pores with catalyzed graphitic structures. Due to the low carbonization temperature and short carbonization time as well as the different catalytic degree of various metals, a series of expanded graphitic layers from 0.34 to 0.44 nm with defects and amorphous carbon structure are obtained. The structure not only offers accessible graphitic spacings for reversible lithium/sodium ion insertion, but also provides abundant active sites for lithium/sodium ion adsorption in the defects and amorphous structure. Moreover, the hierarchical interconnected porous structure combining graphitic ribbons is beneficial for fast electronic/ionic transport and favorable electrolyte permeation. More importantly, such advanced carbon materials prove their feasibility for balancing the pore structure and degree of graphitization. When serving as the electrode material for lithium-ion and sodium-ion batteries, excellent electrochemical performance along with fast kinetics and long cycle life is achieved.

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“…Subsequently, the diffusion coefficient of sodium ions (D) is calculated according the following equation (Eq.

true Z = σ ω^{- 1 / 2} + R_{e} + R_{c t}

true D = R^{2} T^{2} / 2 A^{2} n^{4} F^{4} C^{2} σ^{2}

…”

Section: Resultsmentioning

confidence: 99%

Ultrafast Sodium Storage through Capacitive Behaviors in Carbon Nanosheets with Enhanced Ion Transport

et al. 2019

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Sodium‐ion batteries are regarded as a promising alternative for scalable electricity storage, but the rate capability is still a scientific challenge to be solved, owing to the poor Na+ kinetics in electrodes. Herein, nitrogen‐doped carbon nanosheets with rich defects, nanopores and various interlayer spacings are prepared by pre‐carbonized polymer sheets at different temperatures followed by sodium amide treatment. Combination of thin nanosheets, nanopores and large interlayer spacing can boost the rapid Na+ diffusion, as proven by the calculation of the diffusion coefficient. Meanwhile, the kinetics analysis demonstrates the capacitive behaviors, which favor fast Na+ storage. When applied as an anode, the material exhibits superior rate capability (111.1 mA h g−1 even at 20 A g−1), remarkable cycle stability (over 2000 cycles) and ultrahigh initial coulombic efficiency (81.4 %). Furthermore, this work demonstrates a new way to develop attractive high‐rate carbon anode materials for sodium‐ion batteries.

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Rice husk-derived hard carbons as high-performance anode materials for sodium-ion batteries

Cited by 351 publications

References 67 publications

Sodium/Potassium‐Ion Batteries: Boosting the Rate Capability and Cycle Life by Combining Morphology, Defect and Structure Engineering

Sodium/Potassium‐Ion Batteries: Boosting the Rate Capability and Cycle Life by Combining Morphology, Defect and Structure Engineering

Hierarchical Interconnected Expanded Graphitic Ribbons Embedded with Amorphous Carbon: An Advanced Carbon Nanostructure for Superior Lithium and Sodium Storage

Ultrafast Sodium Storage through Capacitive Behaviors in Carbon Nanosheets with Enhanced Ion Transport

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